|Publication number||US5649953 A|
|Application number||US 08/406,913|
|Publication date||22 Jul 1997|
|Filing date||14 Sep 1993|
|Priority date||28 Sep 1992|
|Also published as||DE69310183D1, DE69310183T2, EP0661955A1, EP0661955B1, WO1994007431A1|
|Publication number||08406913, 406913, PCT/1993/884, PCT/FR/1993/000884, PCT/FR/1993/00884, PCT/FR/93/000884, PCT/FR/93/00884, PCT/FR1993/000884, PCT/FR1993/00884, PCT/FR1993000884, PCT/FR199300884, PCT/FR93/000884, PCT/FR93/00884, PCT/FR93000884, PCT/FR9300884, US 5649953 A, US 5649953A, US-A-5649953, US5649953 A, US5649953A|
|Original Assignee||Bentex Trading S.A.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (14), Referenced by (177), Classifications (12), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to the filtration of clots circulating in the bloodstream. It relates more particularly to an assembly consisting of a filter and a device for inserting it in the vessel.
To prevent the migration of clots originating from the lower veins of the body into the heart and pulmonary artery, and hence to avoid an embolism, it is known to implant filter devices, hereafter called filters, the purpose of which is to obstruct the passage of clots while at the same time allowing the blood to flow through the vessel.
There are numerous types of filter in existence. The so-called GREENFIELD filter, which consists of wires preformed into zig-zags and joined together by a cover, is particularly well known. These wires are arranged to form a cone whose tip is the cover, said zig-zags forming the envelope of the cone. The ends of the wires are provided with anchoring hooks by which the filter can grip the inner wall of the vessel.
The placing of such a filter is effected from an insertion sheath inside which the filter is inserted, the elastic wires being kept approximately in alignment with the longitudinal axis of the sheath. After the distal end of the insertion sheath has been positioned at the location where the filter is to be placed in the vessel, said filter is released with the aid of a thrust component which is a rod capable of being actuated from outside the insertion sheath, and which, bearing on the filter, makes it possible to move the latter while at the same time keeping the insertion sheath steady. Once released in the vessel, the elastic wires develop into a cone inside the vessel, the end hooks on the wires gripping the inner wall of the vessel.
Other filters based on the same working principle have been proposed since this GREENFIELD filter, one having a conical general shape with several lugs joined together at their heads, forming an ogival point and diverging towards their other end. This filter is in a single piece formed from a thin sheet of a material of appropriate elasticity. The lugs in question are therefore flat strips of small thickness. Such lugs are tapered at their free end. For positioning inside the vessel, this filter is placed in an insertion tube. A flexible metal guide is first introduced into the vein; then, using this metal guide, a first, relatively thin insertion tube is introduced which is used as a guide tube for the passage of the insertion tube containing the filter.
Thus, as well as the flexible metal guide, the placing of such a filter requires the use of two insertion tubes.
The Applicant has found various disadvantages to be associated with the devices currently in use. On the one hand, the first insertion tube, through which the second insertion tube containing the filter has to travel, must have a relatively large overall diameter because the second insertion tube can have an internal diameter of 3.6 mm. Thus the first insertion tube may possibly have an external diameter of the order of 5 mm. These tubes are made of a flexible plastic material which must nevertheless be sufficiently rigid to be able to advance inside the vessel while at the same time delimiting an interior space capable of accommodating the second insertion tube. Depending on the sinuosity of the vessels, especially in the case of the left femoral vein, the first insertion tube sometimes becomes prohibitively bent, preventing the second insertion tube from traveling through it normally.
The object which the Applicant set out to achieve is to propose a kit, composed of a filter and a device for placing it, which overcomes the observed disadvantages in that it is of simple design and does not require insertion tubes of large diameter.
This object is perfectly achieved by the kit of the invention, which is composed of a filter, a flexible metal guide, a push-rod and an insertion tube. The filter is formed by elastic lugs extending approximately in the shape of a conical corolla extending from a distal head, which has a small orifice of diameter D1 in its tip; the metal guide has an external diameter D2; the push-rod is a hollow tube of internal diameter D3; the insertion tube, which is made of plastic, is fitted at its distal end with a rigid cylindrical cap of internal diameter D4. The cap has an annular internal set-back at its proximal end, which is capable of acting as a stop for the ends of the lugs of the filter. This annular set-back also serves to center the push-rod. The respective dimensions of the different components mentioned above are such that D4 is greater than D3>D1>D2, so that, in the position of insertion of the filter into the vessel, the tip of the filter is facing forwards, the ends of its lugs being folded back inside the cap, and the distal end of the push-rod bearing against the inner part of said tip.
The placing of the filter by means of the kit of the invention is effected by first introducing the flexible metal guide into the vessel and then threading the filter itself, which is positioned at the end of the insertion tube, over said guide, the lugs being folded back and placed inside the cap which terminates said insertion tube. Thus it is seen that when the assembly consisting of the filter, the insertion tube and the push-rod travels into the vessel, the filter itself is not enclosed in an insertion tube but is outside it. Only the free ends of the lugs of the filter are locked in the cap between the inner face of said cap and the outer surface of the push-rod.
It is seen that, under these conditions, the insertion tube can have a smaller diameter, for example of the order of 3 mm.
By keeping the flexible metal guide inside the vessel during the introduction of the other components of the kit, it is possible to avoid any risk that the filter will become stuck in the sinuosity of the vessel. It may also be pointed out that the filter, held solely by the free end of its lugs, has a degree of flexibility which facilitates the passage of this assembly through the particularly sinuous parts of the vessel. It is of course important for said lugs to be adequately held between the cap and the push-rod. For this purpose, the cap has a length of at least 10 mm for a lug length of between 40 and 60 mm.
The filter preferably has six lugs whose width at the proximal end is approximately equal to or less than half the internal diameter D4 of the cap. Thus, in the folded-back position, the six lugs are contiguous and form a regular hexagon approximately inscribed in the cap.
In the case where the ends of the lugs have means of anchoring to the inner wall of the vessel, these means preferably consist of two hooks pointing in opposite directions. More precisely, each hook is obtained by the cutting-out of a triangular portion of the strip forming the distal end of the lug; moreover, it has an elbow-shaped configuration relative to the plane of said lug. This particular arrangement reduces the height of said hook outwardly of the lug and consequently reduces the space which is required between the push-rod and the cap for accommodating each lug when the filter is positioned. However, this configuration in no way reduces the good grip of the filter on the wall of the vessel.
To avoid any false maneuvers in the placing of the filter, the insertion tube is terminated at its distal end by a shoulder which is intended to remain outside the patient's body; furthermore, the kit has a hollow protective cover which can be firmly fixed to said shoulder, for example by screwing, and which covers the proximal end of the push-rod, the latter extending beyond the insertion tube when said cover is in the fixed position. Thus the operator cannot move the push-rod accidentally; to move it, he has to release the protective cover and remove it in order to have access to the proximal end of the push-rod.
The invention will be understood more clearly from the following description of an embodiment of the filtration kit for medical use, composed of a flexible metal guide, a filter, a push-rod and an insertion tube, illustrated by the attached drawing in which:
FIG. 1 is a diagrammatic section of the filter pre-positioned in the cap terminating the distal end of the insertion tube,
FIG. 2 is a diagrammatic section of the filtration kit after the filter has been released inside the vein,
FIG. 3 is a cross-section of the cap, the filter, the push-rod and the guide along the line A,A of FIG. 1, and
FIG. 4 is a diagrammatic section of the proximal end of the kit.
The filtration kit for medical use according to the invention is composed of four components, namely a flexible metal guide 1, a filter 2, a push-rod 3 and an insertion tube 4.
The metal guide is well known in other connections, being already in common use. It is a flexible wire of given external diameter D2.
The filter 2 is formed of elastic lugs 5 fixed to the distal head 6 of the filter. This head 6 has a passage orifice 7 of internal diameter D1, which is greater than the abovementioned diameter D2.
The push-rod 3 is a hollow flexible tube whose internal diameter is slightly greater than D2. The external diameter of the push-rod is referred to as D3.
The insertion tube 4 is a flexible plastic sheath 8 terminated by a rigid cap 9. The latter is for example a small cylindrical metal tube to which the end of the sheath 8 is fitted under the action of heat. The cap 9 has an internal diameter D4 which is substantially greater than the external diameter D3 of the push-rod 3. It has an annular set-back 18 at its proximal end, i.e. at the end attached to the insertion tube 4.
FIG. 1 shows the filter 2 prepositioned on the insertion tube 8. In this configuration, the head 6 of the filter is facing forwards, i.e. towards what will be the distal end after introduction into the vein. The lugs 5 are pulled back longitudinally along the axis of the filter and are introduced inside the cap 9. They essentially butt against the annular internal set-back 18 at the bottom of the cap 9. The push-rod 3 is placed inside the insertion tube 4, passes through the hollow space inside the annular set-back 18, which helps to center it in the cap 9, and extends beyond the distal end of said insertion tube until it comes into contact with the internal part of the head 6.
FIG. 4 shows the proximal end of the kit, which is intended to remain outside the patient's body. The insertion tube 4 is terminated by a threaded shoulder 16 to which a protective cover 17 is firmly fixed by screwing. This cover 17 is hollow and extends beyond the distal end of the push-rod 3.
To place the filter inside the vein, the metal guide 1 is first introduced as far as the location where the filter 2 is to be positioned.
Once this has been done, the filter 2, the push-rod 3 and the insertion tube 4, as shown in FIGS. 1 and 4, are threaded over the proximal end of the guide, which is therefore located outside the patient's body. This threading operation is carried out by pushing said proximal end of the guide 1 successively through the orifice 7 in the head 6 of the filter 2 and through the hollow space inside the push-rod 3.
This assembly made up of the filter 2, the push-rod 3 and the insertion tube 4 is pushed into the vein as far as the location where the filter 2 is to be positioned.
The filter 2 is released by holding the insertion tube 4 steady and moving the push-rod 3 forwards. This can only be done after the protective cover 17 has been unscrewed, thereby giving the operator access to the proximal end of the push-rod 3. This movement pushes the head 6 of the filter 2, and with it the end 5a of the lugs 5 inside the cap 9, until said ends 5a come out of said cap.
The lugs 5, now freed from their entrapment in the cap 9, develop the shape of a corolla by virtue of their natural elasticity, and the filter 2 forms a cone, the ends 5a of the lugs 5 bearing on the inner wall of the vein.
In a preferred embodiment, the filter 2 is formed of six elastic lugs 5. These are metal strips which have been preformed and heat-treated so that, in the normal position, they have an outwardly bent shape shown in FIG. 2. The head 6 of the filter is made up of two parts 12, 13: an outer hollow part 12 and a second inner cylindrical part 13. The lugs 5, arranged symmetrically and attached to one another over the inner periphery of the first part 12, are locked in position by the introduction of the second cylindrical part 13.
The filter 2 also possesses anchoring hooks 14, 15 situated at the free ends 5a of the lugs 5. Each lug 5 preferably has two hooks, 14 and 15, inclined in opposite directions, as illustrated in FIG. 2.
Advantageously, each hook is obtained by the cutting-out and bending of a V-shape made in the central zone of the relatively proximal end 5a of each lug 5.
FIG. 3 shows a filter comprising six lugs 5 whose width is substantially less than half the internal diameter D4 of the cap 9. Thus, once positioned inside the cap 9, the ends 5a of these six lugs 5 take up a position in the shape of a regular hexagon.
Advantageously, the hooks 14 have an elbow 15, reducing their height e relative to the plane of the lug 5a. This height e preferably corresponds approximately to the height of the arc of the regular hexagon inscribed in the circle, representing the inner face of the cap 9.
Choosing these characteristics makes it possible to optimize the accommodation of the end 5a of the lugs 5 inside the cap 9 and around the push-rod 3 so as to obtain a homogeneous release of the filter 2 inside the vein under the action of the push-rod 3.
The invention is not limited to the embodiment which has now been described by way of a non-exhaustive example. In particular, it would be possible to use other types of filter than that described in detail, provided that the diameter of the orifice in the tip is greater than that of the metal guide, so as to allow the latter to pass through, but smaller than the external diameter of the push-rod, so that the latter can bear on the inner face of said tip.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3952747 *||28 Mar 1974||27 Apr 1976||Kimmell Jr Garman O||Filter and filter insertion instrument|
|US4425908 *||22 Oct 1981||17 Jan 1984||Beth Israel Hospital||Blood clot filter|
|US4943297 *||6 Jan 1989||24 Jul 1990||Saveliev Viktor S||Device for preparation of intravenous filter for implantation|
|US4969891 *||13 Apr 1990||13 Nov 1990||Gewertz Bruce L||Removable vascular filter|
|US4990156 *||14 Jun 1989||5 Feb 1991||Lefebvre Jean Marie||Filter for medical use|
|US5011488 *||20 Aug 1990||30 Apr 1991||Robert Ginsburg||Thrombus extraction system|
|US5108418 *||10 Oct 1990||28 Apr 1992||Lefebvre Jean Marie||Device implanted in a vessel with lateral legs provided with antagonistically oriented teeth|
|US5133733 *||31 Oct 1990||28 Jul 1992||William Cook Europe A/S||Collapsible filter for introduction in a blood vessel of a patient|
|US5147379 *||26 Nov 1990||15 Sep 1992||Louisiana State University And Agricultural And Mechanical College||Insertion instrument for vena cava filter|
|US5151105 *||7 Oct 1991||29 Sep 1992||Kwan Gett Clifford||Collapsible vessel sleeve implant|
|US5152777 *||25 Jan 1989||6 Oct 1992||Uresil Corporation||Device and method for providing protection from emboli and preventing occulsion of blood vessels|
|EP0408245A1 *||4 Jul 1990||16 Jan 1991||American Medical Systems, Inc.||Stent placement instrument|
|FR2567405A1 *||Title not available|
|FR2580504A1 *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6086570 *||29 Sep 1998||11 Jul 2000||A-Med Systems, Inc.||Hemostasis valve with membranes having offset apertures|
|US6228063||23 Oct 1997||8 May 2001||A-Med Systems, Inc.||Anatomical cavity access sealing conduit|
|US6290710||29 Dec 1999||18 Sep 2001||Advanced Cardiovascular Systems, Inc.||Embolic protection device|
|US6328755||23 Sep 1999||11 Dec 2001||Scimed Life Systems, Inc.||Filter delivery device|
|US6342062 *||23 Sep 1999||29 Jan 2002||Scimed Life Systems, Inc.||Retrieval devices for vena cava filter|
|US6443971||21 Dec 1999||3 Sep 2002||Advanced Cardiovascular Systems, Inc.||System for, and method of, blocking the passage of emboli through a vessel|
|US6485500||21 Mar 2000||26 Nov 2002||Advanced Cardiovascular Systems, Inc.||Emboli protection system|
|US6485501||11 Aug 2000||26 Nov 2002||Cordis Corporation||Vascular filter system with guidewire and capture mechanism|
|US6511492 *||1 May 1998||28 Jan 2003||Microvention, Inc.||Embolectomy catheters and methods for treating stroke and other small vessel thromboembolic disorders|
|US6511496||12 Sep 2000||28 Jan 2003||Advanced Cardiovascular Systems, Inc.||Embolic protection device for use in interventional procedures|
|US6511503||30 Dec 1999||28 Jan 2003||Advanced Cardiovascular Systems, Inc.||Catheter apparatus for treating occluded vessels and filtering embolic debris and method of use|
|US6537294||17 Oct 2000||25 Mar 2003||Advanced Cardiovascular Systems, Inc.||Delivery systems for embolic filter devices|
|US6540722||24 Jan 2000||1 Apr 2003||Advanced Cardiovascular Systems, Inc.||Embolic protection devices|
|US6540767||8 Feb 2000||1 Apr 2003||Scimed Life Systems, Inc.||Recoilable thrombosis filtering device and method|
|US6540768||9 Feb 2000||1 Apr 2003||Cordis Corporation||Vascular filter system|
|US6551303||27 Oct 1999||22 Apr 2003||Atritech, Inc.||Barrier device for ostium of left atrial appendage|
|US6558405||29 Aug 2000||6 May 2003||Advanced Cardiovascular Systems, Inc.||Embolic filter|
|US6569184||27 Feb 2001||27 May 2003||Advanced Cardiovascular Systems, Inc.||Recovery system for retrieving an embolic protection device|
|US6592616||28 Apr 2000||15 Jul 2003||Advanced Cardiovascular Systems, Inc.||System and device for minimizing embolic risk during an interventional procedure|
|US6602273||26 Sep 2001||5 Aug 2003||Scimed Life Systems, Inc.||Filter delivery device|
|US6623450||17 Dec 1999||23 Sep 2003||Advanced Cardiovascular Systems, Inc.||System for blocking the passage of emboli through a body vessel|
|US6645221||30 May 2000||11 Nov 2003||Zuli, Holdings Ltd.||Active arterial embolization filter|
|US6652555||18 Aug 2000||25 Nov 2003||Atritech, Inc.||Barrier device for covering the ostium of left atrial appendage|
|US6652556||26 Oct 2000||25 Nov 2003||Atritech, Inc.||Filter apparatus for ostium of left atrial appendage|
|US6679902||19 Jul 2000||20 Jan 2004||Advanced Cardiovascular Systems, Inc.||Reduced profile delivery sheath for use in interventional procedures|
|US6685722 *||10 Nov 1999||3 Feb 2004||Microvention, Inc.||Embolectomy catheters and methods for treating stroke and other small vessel thromboembolic disorders|
|US6689150||11 Jul 2000||10 Feb 2004||Atritech, Inc.||Filter apparatus for ostium of left atrial appendage|
|US6695813||30 Dec 1999||24 Feb 2004||Advanced Cardiovascular Systems, Inc.||Embolic protection devices|
|US6702834||28 Nov 2000||9 Mar 2004||Advanced Cardiovascular Systems, Inc.||Embolic protection devices|
|US6726621||14 Dec 2001||27 Apr 2004||Scimed Life Systems, Inc.||Retrieval devices for vena cava filter|
|US6730108||27 Mar 2003||4 May 2004||Atritech, Inc.||Barrier device for ostium of left atrial appendage|
|US6761732||27 Sep 2002||13 Jul 2004||Advanced Cardiovascular Systems, Inc.||Catheter apparatus for treating occluded vessels and filtering embolic debris and method of use|
|US6780196 *||20 Nov 2001||24 Aug 2004||Scimed Life Systems, Inc.||Removable occlusion system for aneurysm neck|
|US6872217||23 Jan 2003||29 Mar 2005||Scimed Life Systems, Inc.||Recoilable thrombosis filtering device and method|
|US6890340||29 Nov 2001||10 May 2005||Medtronic Vascular, Inc.||Apparatus for temporary intraluminal protection|
|US6896691||19 Jun 2002||24 May 2005||Advanced Cardiovascular Systems, Inc.||System for, and method of, blocking the passage of emboli through a vessel|
|US6941169||4 Jun 2002||6 Sep 2005||Albert Einstein Healthcare Network||Cardiac stimulating apparatus having a blood clot filter and atrial pacer|
|US6949113||3 Dec 2002||27 Sep 2005||Atritech, Inc.||Barrier device for ostium of left atrial appendage|
|US6964670||13 Jul 2000||15 Nov 2005||Advanced Cardiovascular Systems, Inc.||Embolic protection guide wire|
|US6969396||7 May 2003||29 Nov 2005||Scimed Life Systems, Inc.||Filter membrane with increased surface area|
|US6994718||29 Oct 2003||7 Feb 2006||Medtronic Vascular, Inc.||Distal protection device for filtering and occlusion|
|US7011671||16 Jul 2002||14 Mar 2006||Atritech, Inc.||Cardiac implant device tether system and method|
|US7018393 *||31 Aug 2001||28 Mar 2006||Advanced Cardiovascular Systems, Inc.||Sheathless embolic protection system|
|US7041117||26 Feb 2004||9 May 2006||Scimed Life Systems, Inc.||Retrieval devices for vena cava filter|
|US7131981 *||13 Aug 2003||7 Nov 2006||Angiodynamics, Inc.||Device and method for converting a balloon catheter into a cutting balloon catheter|
|US7137991||24 Feb 2003||21 Nov 2006||Scimed Life Systems, Inc.||Multi-wire embolic protection filtering device|
|US7169160 *||28 Jul 1998||30 Jan 2007||Medtronic, Inc.||Device for anchoring tubular element|
|US7169164||21 Sep 2001||30 Jan 2007||Atritech, Inc.||Apparatus for implanting devices in atrial appendages|
|US7172614||27 Jun 2002||6 Feb 2007||Advanced Cardiovascular Systems, Inc.||Support structures for embolic filtering devices|
|US7192434||25 Apr 2002||20 Mar 2007||Ev3 Inc.||Vascular protection devices and methods of use|
|US7217255||10 Mar 2003||15 May 2007||Advanced Cardiovascular Systems, Inc.||Embolic protection devices|
|US7229461||20 Aug 2004||12 Jun 2007||Boston Scientific Scimed, Inc.||Removable occlusion system for aneurysm neck|
|US7241304||21 Dec 2001||10 Jul 2007||Advanced Cardiovascular Systems, Inc.||Flexible and conformable embolic filtering devices|
|US7244267||19 Jun 2003||17 Jul 2007||Advanced Cardiovascular Systems, Inc.||Filter device for embolic protection systems|
|US7252675||30 Sep 2002||7 Aug 2007||Advanced Cardiovascular, Inc.||Embolic filtering devices|
|US7306619||24 Oct 2003||11 Dec 2007||Advanced Cardiovascular Systems, Inc.||Self furling umbrella frame for carotid filter|
|US7331973||30 Sep 2002||19 Feb 2008||Avdanced Cardiovascular Systems, Inc.||Guide wire with embolic filtering attachment|
|US7338510||29 Jun 2001||4 Mar 2008||Advanced Cardiovascular Systems, Inc.||Variable thickness embolic filtering devices and method of manufacturing the same|
|US7396358||2 Dec 2005||8 Jul 2008||Angiodynamics, Inc.||Device and method for converting a balloon catheter into a cutting balloon catheter|
|US7425215||10 Mar 2003||16 Sep 2008||Advanced Cardiovascular Systems, Inc.||Delivery systems for embolic filter devices|
|US7537598||26 Apr 2005||26 May 2009||Advanced Cardiovascular Systems, Inc.||Embolic protection guide wire|
|US7537601||13 May 2005||26 May 2009||Advanced Cardiovascular Systems, Inc.||Apparatus for capturing objects beyond an operative site utilizing a capture device delivered on a medical guide wire|
|US7549983||24 Nov 2004||23 Jun 2009||Atritech, Inc.||Method of closing an opening in a wall of the heart|
|US7572272||18 Apr 2005||11 Aug 2009||Advanced Cardiovascular Systems, Inc.||Embolic filtering devices for bifurcated vessels|
|US7625390||18 Apr 2005||1 Dec 2009||Cook Incorporated||Removable vena cava filter|
|US7662166||13 Feb 2006||16 Feb 2010||Advanced Cardiocascular Systems, Inc.||Sheathless embolic protection system|
|US7678129||19 Mar 2004||16 Mar 2010||Advanced Cardiovascular Systems, Inc.||Locking component for an embolic filter assembly|
|US7678131||19 Jan 2007||16 Mar 2010||Advanced Cardiovascular Systems, Inc.||Single-wire expandable cages for embolic filtering devices|
|US7691121 *||9 Dec 2003||6 Apr 2010||Microvention, Inc.||Embolectomy catheters and methods for treating stroke and other small vessel thromboembolic disorders|
|US7699867||18 Apr 2005||20 Apr 2010||Cook Incorporated||Removable vena cava filter for reduced trauma in collapsed configuration|
|US7716801||24 Nov 2003||18 May 2010||Medtronic Vascular, Inc.||Low-profile distal protection device|
|US7722641||8 Dec 2004||25 May 2010||Atritech, Inc.||Filter mesh for preventing passage of embolic material form an atrial appendage|
|US7727189||19 Aug 2003||1 Jun 2010||Atritech, Inc.||Filter apparatus for ostium of left atrial appendage|
|US7740644||24 Feb 2003||22 Jun 2010||Boston Scientific Scimed, Inc.||Embolic protection filtering device that can be adapted to be advanced over a guidewire|
|US7763045||11 Feb 2004||27 Jul 2010||Cook Incorporated||Removable vena cava filter|
|US7766934||11 Jul 2006||3 Aug 2010||Cook Incorporated||Embolic protection device with an integral basket and bag|
|US7771452||11 Jul 2006||10 Aug 2010||Cook Incorporated||Embolic protection device with a filter bag that disengages from a basket|
|US7780693 *||27 Jun 2002||24 Aug 2010||Salviac Limited||Catheter|
|US7780694||6 Oct 2003||24 Aug 2010||Advanced Cardiovascular Systems, Inc.||Intravascular device and system|
|US7815660||4 Feb 2008||19 Oct 2010||Advanced Cardivascular Systems, Inc.||Guide wire with embolic filtering attachment|
|US7815661 *||25 Jan 2006||19 Oct 2010||Tyco Healthcare Group, Lp||Method and apparatus for implanting an occlusive structure|
|US7842064||1 Aug 2006||30 Nov 2010||Advanced Cardiovascular Systems, Inc.||Hinged short cage for an embolic protection device|
|US7850708||19 Jun 2006||14 Dec 2010||Cook Incorporated||Embolic protection device having a reticulated body with staggered struts|
|US7867247||26 Feb 2010||11 Jan 2011||Cook Incorporated||Methods for embolic protection during treatment of a stenotic lesion in a body vessel|
|US7867273||27 Jun 2007||11 Jan 2011||Abbott Laboratories||Endoprostheses for peripheral arteries and other body vessels|
|US7879065||26 Jan 2007||1 Feb 2011||Advanced Cardiovascular Systems, Inc.||Locking component for an embolic filter assembly|
|US7892251||12 Nov 2003||22 Feb 2011||Advanced Cardiovascular Systems, Inc.||Component for delivering and locking a medical device to a guide wire|
|US7918820||11 Sep 2009||5 Apr 2011||Advanced Cardiovascular Systems, Inc.||Device for, and method of, blocking emboli in vessels such as blood arteries|
|US7927346||10 Sep 2004||19 Apr 2011||Stryker Corporation||Diversion device to increase cerebral blood flow|
|US7931666||18 Jan 2010||26 Apr 2011||Advanced Cardiovascular Systems, Inc.||Sheathless embolic protection system|
|US7959646||26 Jun 2007||14 Jun 2011||Abbott Cardiovascular Systems Inc.||Filter device for embolic protection systems|
|US7959647||6 Dec 2007||14 Jun 2011||Abbott Cardiovascular Systems Inc.||Self furling umbrella frame for carotid filter|
|US7967837||27 Jun 2002||28 Jun 2011||Salviac Limited||Catheter|
|US7972353||18 Apr 2005||5 Jul 2011||Cook Medical Technologies Llc||Removable vena cava filter with anchoring feature for reduced trauma|
|US7972354 *||25 Jan 2006||5 Jul 2011||Tyco Healthcare Group Lp||Method and apparatus for impeding migration of an implanted occlusive structure|
|US7972356||25 Jun 2007||5 Jul 2011||Abbott Cardiovascular Systems, Inc.||Flexible and conformable embolic filtering devices|
|US7972359||16 Sep 2005||5 Jul 2011||Atritech, Inc.||Intracardiac cage and method of delivering same|
|US7976560||17 Jan 2007||12 Jul 2011||Abbott Cardiovascular Systems Inc.||Embolic filtering devices|
|US8007510||11 May 2010||30 Aug 2011||Boston Scientific Scimed, Inc.||Embolic protection filtering device that can be adapted to be advanced over a guidewire|
|US8011370||19 Dec 2008||6 Sep 2011||Tyco Healthcare Group Lp||Method for permanent occlusion of fallopian tube|
|US8016854||4 Feb 2008||13 Sep 2011||Abbott Cardiovascular Systems Inc.||Variable thickness embolic filtering devices and methods of manufacturing the same|
|US8029530||13 Oct 2010||4 Oct 2011||Abbott Cardiovascular Systems Inc.||Guide wire with embolic filtering attachment|
|US8034074 *||27 Dec 2006||11 Oct 2011||Boston Scientific Scimed, Inc.||Intravascular filter retrieval device having an actuatable dilator tip|
|US8043322||18 Apr 2005||25 Oct 2011||Cook Medical Technologies Llc||Removable vena cava filter having inwardly positioned anchoring hooks in collapsed configuration|
|US8043329||15 May 2006||25 Oct 2011||Atritech, Inc.||Method of implanting an adjustable occlusion device|
|US8100935||5 Jul 2007||24 Jan 2012||Microvention, Inc.|
|US8105349||18 Apr 2005||31 Jan 2012||Cook Medical Technologies Llc||Removable vena cava filter having primary struts for enhanced retrieval and delivery|
|US8109962||19 Jun 2006||7 Feb 2012||Cook Medical Technologies Llc||Retrievable device having a reticulation portion with staggered struts|
|US8114116||18 Jan 2008||14 Feb 2012||Cook Medical Technologies Llc||Introduction catheter set for a self-expandable implant|
|US8137377||29 Apr 2008||20 Mar 2012||Abbott Laboratories||Embolic basket|
|US8142442||29 Apr 2008||27 Mar 2012||Abbott Laboratories||Snare|
|US8152831||16 Nov 2006||10 Apr 2012||Cook Medical Technologies Llc||Foam embolic protection device|
|US8167901||27 Sep 2005||1 May 2012||Cook Medical Technologies Llc||Removable vena cava filter comprising struts having axial bends|
|US8177791||15 Apr 2009||15 May 2012||Abbott Cardiovascular Systems Inc.||Embolic protection guide wire|
|US8182507||31 May 2006||22 May 2012||Tyco Healthcare Group Lp||Vascular protection devices and methods of use|
|US8182508||28 Sep 2006||22 May 2012||Cook Medical Technologies Llc||Embolic protection device|
|US8187298||31 Jul 2006||29 May 2012||Cook Medical Technologies Llc||Embolic protection device having inflatable frame|
|US8216269||2 Nov 2006||10 Jul 2012||Cook Medical Technologies Llc||Embolic protection device having reduced profile|
|US8221445||24 Sep 2004||17 Jul 2012||Atritech, Inc.||Barrier device for ostium of left atrial appendage|
|US8221446||14 Mar 2006||17 Jul 2012||Cook Medical Technologies||Embolic protection device|
|US8246648||10 Nov 2008||21 Aug 2012||Cook Medical Technologies Llc||Removable vena cava filter with improved leg|
|US8246650||1 Mar 2010||21 Aug 2012||Cook Medical Technologies Llc||Removable vena cava filter|
|US8246651||4 Mar 2010||21 Aug 2012||Cook Medical Technologies Llc||Removable vena cava filter for reduced trauma in collapsed configuration|
|US8246672||19 Dec 2008||21 Aug 2012||Cook Medical Technologies Llc||Endovascular graft with separately positionable and removable frame units|
|US8252017||13 Oct 2006||28 Aug 2012||Cook Medical Technologies Llc||Invertible filter for embolic protection|
|US8252018||14 Sep 2007||28 Aug 2012||Cook Medical Technologies Llc||Helical embolic protection device|
|US8262689||28 Sep 2001||11 Sep 2012||Advanced Cardiovascular Systems, Inc.||Embolic filtering devices|
|US8262695||25 Jan 2006||11 Sep 2012||Tyco Healthcare Group Lp||Structures for permanent occlusion of a hollow anatomical structure|
|US8287564||11 Aug 2011||16 Oct 2012||Boston Scientific Scimed, Inc.||Embolic protection filtering device that can be adapted to be advanced over a guidewire|
|US8308753||25 Feb 2010||13 Nov 2012||Advanced Cardiovascular Systems, Inc.||Locking component for an embolic filter assembly|
|US8333201||1 Jul 2011||18 Dec 2012||Covidien Lp||Method for permanent occlusion of fallopian tube|
|US8333786||18 Oct 2010||18 Dec 2012||Covidien Lp||Method and apparatus for implanting an occlusive structure|
|US8377092||13 Sep 2006||19 Feb 2013||Cook Medical Technologies Llc||Embolic protection device|
|US8388644||29 Dec 2008||5 Mar 2013||Cook Medical Technologies Llc||Embolic protection device and method of use|
|US8414655 *||1 Jul 2010||9 Apr 2013||Spiration, Inc.||Removable lung reduction devices, systems, and methods|
|US8419748||14 Sep 2007||16 Apr 2013||Cook Medical Technologies Llc||Helical thrombus removal device|
|US8523897||27 Sep 2006||3 Sep 2013||Atritech, Inc.||Device for left atrial appendage occlusion|
|US8535343||17 May 2011||17 Sep 2013||Atritech, Inc.||Method for left atrial appendage occlusion|
|US8591540||29 Sep 2003||26 Nov 2013||Abbott Cardiovascular Systems Inc.||Embolic filtering devices|
|US8603127||8 Mar 2012||10 Dec 2013||Spiration, Inc.||Removable anchored lung volume reduction devices and methods|
|US8632562||2 Oct 2006||21 Jan 2014||Cook Medical Technologies Llc||Embolic protection device|
|US8657849||5 Feb 2013||25 Feb 2014||Cook Medical Technologies Llc||Embolic protection device and method of use|
|US8663273||17 Oct 2011||4 Mar 2014||Atritech, Inc.||Method of implanting an adjustable occlusion device|
|US8667973||1 Nov 2011||11 Mar 2014||Spiration, Inc.||Bronchoscopic lung volume reduction method|
|US8685055||4 Sep 2003||1 Apr 2014||Atritech, Inc.||Filter apparatus for ostium of left atrial appendage|
|US8795315||6 Oct 2005||5 Aug 2014||Cook Medical Technologies Llc||Emboli capturing device having a coil and method for capturing emboli|
|US8845583||10 Jan 2007||30 Sep 2014||Abbott Cardiovascular Systems Inc.||Embolic protection devices|
|US8845677||23 Dec 2011||30 Sep 2014||Cook Medical Technologies Llc||Retrievable device having a reticulation portion with staggered struts|
|US8945169||14 Mar 2006||3 Feb 2015||Cook Medical Technologies Llc||Embolic protection device|
|US8968353||1 Jul 2011||3 Mar 2015||Covidien Lp||Method and apparatus for impeding migration of an implanted occlusive structure|
|US9017350||25 Jan 2006||28 Apr 2015||Covidien Lp||Expandable occlusive structure|
|US9017361||20 Apr 2006||28 Apr 2015||Covidien Lp||Occlusive implant and methods for hollow anatomical structure|
|US9107733||13 Jan 2006||18 Aug 2015||W. L. Gore & Associates, Inc.||Removable blood conduit filter|
|US20020022860 *||17 Aug 2001||21 Feb 2002||Borillo Thomas E.||Expandable implant devices for filtering blood flow from atrial appendages|
|US20020156520 *||19 Jun 2002||24 Oct 2002||Boylan John F.||System for, and method of, blocking the passage of emboli through a vessel|
|US20040127935 *||19 Aug 2003||1 Jul 2004||Atritech, Inc.||Filter apparatus for ostium of left atrial appendage|
|US20040133232 *||9 Dec 2003||8 Jul 2004||Microvention, Inc.|
|US20040138693 *||14 Jan 2003||15 Jul 2004||Scimed Life Systems, Inc.||Snare retrievable embolic protection filter with guidewire stopper|
|US20040167565 *||24 Feb 2003||26 Aug 2004||Scimed Life Systems, Inc.||Embolic protection filtering device that can be adapted to be advanced over a guidewire|
|US20040172042 *||26 Feb 2004||2 Sep 2004||Scimed Life Systems, Inc.||Retrieval devices for vena cava filter|
|US20040193196 *||13 Aug 2003||30 Sep 2004||Angiodynamics, Inc,||Device and method for converting a balloon catheter into a cutting ballon catheter|
|US20040193208 *||27 Mar 2003||30 Sep 2004||Scimed Life Systems, Inc.||Radiopaque embolic protection filter membrane|
|US20040199199 *||2 Apr 2003||7 Oct 2004||Scimed Life Systems, Inc.||Filter and method of making a filter|
|US20040230220 *||11 Feb 2004||18 Nov 2004||Cook Incorporated||Removable vena cava filter|
|US20040230222 *||30 Jan 2004||18 Nov 2004||Van Der Burg Erik J.||System for left atrial appendage occlusion|
|US20050021077 *||20 Aug 2004||27 Jan 2005||Scimed Life Systems, Inc.||Removable occlusion system for aneurysm neck|
|US20050049573 *||24 Sep 2004||3 Mar 2005||Atritech, Inc.||Barrier device for ostium of left atrial appendage|
|US20050096691 *||29 Oct 2003||5 May 2005||Medtronic Vascular, Inc.||Distal protection device for filtering and occlusion|
|US20050124876 *||24 Nov 2003||9 Jun 2005||Medtronic Vascular, Inc.||Low-profile distal protection device|
|US20050131452 *||26 Jan 2005||16 Jun 2005||Walak Steven E.||Recoilable thrombosis filtering device and method|
|US20050149109 *||23 Dec 2003||7 Jul 2005||Wallace Michael P.||Expanding filler coil|
|US20050251198 *||6 May 2004||10 Nov 2005||Scimed Life Systems, Inc.||Intravascular filter membrane and method of forming|
|US20110054632 *||1 Jul 2010||3 Mar 2011||Spiration, Inc.||Removable lung reduction devices, systems, and methods|
|US20110202086 *||28 Aug 2009||18 Aug 2011||Bates Brian L||Vena cava filter having plurality of hooks|
|US20120095416 *||19 Apr 2012||Cook Incorporated||Hemodialysis catheter with thrombus blocker|
|WO1999056801A2 *||30 Apr 1999||11 Nov 1999||Microvention Inc|
|WO2005065556A1 *||15 Dec 2004||21 Jul 2005||Scimed Life Systems Inc||Expandable embolic coil|
|U.S. Classification||606/200, 604/104, 606/191, 604/106|
|Cooperative Classification||A61F2230/005, A61F2230/0093, A61F2230/008, A61F2002/016, A61F2/01, A61F2002/011|
|9 May 1995||AS||Assignment|
Owner name: BENTEX TRADING S.A., LUXEMBOURG
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEFEBVRE, JEAN-MARIE;REEL/FRAME:007698/0501
Effective date: 19950503
|14 Dec 2000||FPAY||Fee payment|
Year of fee payment: 4
|29 Dec 2004||FPAY||Fee payment|
Year of fee payment: 8
|24 Dec 2008||FPAY||Fee payment|
Year of fee payment: 12